CVE-2023-43000

criticalknown exploitedcovered by 1 sourcefirst seen 2026-03-05

Actively exploited. CVE-2023-43000 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-03-05) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.

Apple macOS, iOS, iPadOS, and Safari 16.6 contain a use-after-free vulnerability due to the processing of maliciously crafted web content that may lead to memory corruption.

CSIRTS triage

vendor: Apple Memory corruption

What: The vulnerability may lead to memory corruption due to a use-after-free condition in processing web content.
Who is affected: Users of Apple macOS, iOS, iPadOS, and Safari 16.6 are affected.
Urgency: Remediation is critical as the vulnerability is actively exploited and poses significant risks.
Action: Update all affected Apple products to the latest versions.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 89% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalexploitedCVE-2023-43000: Apple Multiple products Use-After-Free Vulnerabilitycisa-kev · 2026-03-05

External references

NVD record for CVE-2023-43000

CVE.org record

CISA KEV catalog

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